KR102196758B1 - Rolling motion damping system of small ship, and small ship having the rolling motion damping system - Google Patents

Abstract

The present invention relates to a system for reducing lateral shake of a small ship, a small ship having the lateral sway reduction system, and a method for reducing lateral sway of a small ship, comprising two rotating disk-shaped movable masses, and two movable masses. By rotating at high speed in opposite directions to generate centrifugal force to improve the roll effect of the ship, the feeling of boarding can be greatly improved, and it can be installed on a small ship at low cost to obtain vibration reduction effect, and passenger comfort and comfort. By securing and reducing side effects such as motion sickness, it is possible to increase sales through the development and commercialization of the fishery and marine leisure markets and promote overseas market entry.

Description

Small ships equipped with the rolling motion reduction system of small ships and the rolling motion reduction system {ROLLING MOTION DAMPING SYSTEM OF SMALL SHIP, AND SMALL SHIP HAVING THE ROLLING MOTION DAMPING SYSTEM}

The present invention relates to a system for reducing lateral movement of a small ship by using a position change of a movable mass, and a system for reducing lateral movement of a small vessel, and to a small vessel having the system for reducing lateral movement, and more specifically, a rotating disk type operation. Consisting of two masses, the two movable masses rotate in opposite directions at high speed to generate centrifugal force to improve the roll effect of the ship, greatly improving the feeling of embarkation, and at low cost for small ships. It can be installed to obtain vibration reduction effect, secure passenger comfort and comfort, and reduce side effects such as motion sickness, thereby improving sales through the development and commercialization of the fishing and marine leisure markets, and a small size that can promote overseas market entry. The present invention relates to a ship's sideways shaking reduction system, and a small ship having the sideways shaking reduction system.

As the standard of living of the people improves and income increases, interest in various marine leisure is also greatly increasing. In particular, Korea, which is surrounded by the sea on three sides, not only has the best conditions for marine leisure activities and fishing activities, but also has the advantage of being able to pursue new regional specialization as a high value-added industry.

Ships have various types of operation, such as offshore structures, logistics transport ships, fishing ships, cable work ships, and training ships for voyage and fishing work. Unlike structures on land, these ships are supported by buoyancy and operate on the water surface. .

Research on the movement of the ship's hull and seasickness has been established as an important research field for securing a comfortable operating environment as well as a study on the operational safety aspects of the ship.

In general, the internal port performance has been evaluated as a seawater intrusion due to the hull motion, slamming, propeller racing, rolling, left and right acceleration, and vertical acceleration, etc., but in recent years, passengers' comfort and comfort have been evaluated. In order to do so, it uses various criteria of the rate of motion sickness among passengers or MSI (Motion Sickness Incidence).

Merchant ships tend to grow in size in parallel with the rapid economic growth, and to increase stability and economic feasibility. However, the current situation is that small and medium-sized ships such as fishing vessels are not actively researching the improvement of safety and comfort compared to commercial ships.

The feeling of riding is a combination of various factors that humans can feel from subjective and sensory sensitivity, namely, vibration, noise, humidity, temperature, illumination, ventilation, and visibility. Among these, vibrations generated by structures or external forces are transmitted to the human body, causing a decrease in stability, disturbance of activities, deterioration of health, irritability and motion sickness. Variables related to motion sickness include axis of vibration, frequency of vibration, amplitude and exposure time.

Unlike rivers and lakes, ships operating at sea have very large changes in the water surface, so excessive six-way induction movement occurs depending on the weather conditions, due to the vertical, left and right, forward and backward movements of the ship and rotational movements of roll, pitch, and yaw. I can share.

Ships at sea inevitably cause sideways shaking by waves. Such swaying causes a burden of accumulation of discomfort and fatigue to passengers or crew, as well as dangerous situations such as overturning of loaded cargo. In particular, when the wave fluctuations due to deteriorating weather conditions increase, large-scale accidents may occur, such as overturning of the ship or damage to the hull due to collisions between moored ships due to the corresponding lateral fluctuation.

Therefore, various ships are equipped with various types of lateral shake reduction devices according to the characteristics of the vessel. Typical lateral sway reduction devices include a bilge keel formed of a keel-shaped protrusion in the bend under the hull. A fin stabilizer that generates an opposite force against the hull's lateral sway by adjusting the angle of the hull, and an ART (Anti-Rolling Tank) that suppresses lateral sway by forming a U-shaped tank inside the hull. Can be counted.

However, these billskills, pin ballasts, and ART devices are considered from the design stage of the ship and are installed integrally with the hull while maintaining their precision until the ship is completed, making it very difficult to manufacture and install. Even afterwards, maintenance and management are very difficult, and there is a problem in that excessive power must be used.

In addition, due to its structural characteristics, the installation cost is high, which increases the burden of the ship manufacturing cost. In particular, in the case of ART, there is a disadvantage that it takes up a lot of space in the hull unnecessarily, the difficulty of installation and maintenance is great, and the production cost is also quite high.

In addition, the conventional lateral shaking reduction devices have a fatal problem that they cannot cope with the change in the size of the ship according to the design change because the structure and standard are limited to the size of the ship from the design stage.

In addition, according to statistics of registered ships of the National Statistical Office, ships with less than 5 tons were the most, followed by ships with 5 tons less than 20 tons. The proportion of fishing vessels less than 10 tons nationwide is 93%, which is an overwhelmingly large proportion.

Existing commercial vessel vibration reduction devices sell from 10 ton or more ships to 140 ton or more ships, and focus on ships of 10 or more tons. The price is also high at around 35 million won per 10 tons based on Seakeeper.

Existing commercial ship vibration reduction devices are large in size and occupy the space of small ships, so they may interfere with passengers' traffic and cause problems for passengers' safety.This reduces traffic disturbances and improves space utilization within the ship. There is an urgent need to develop a vibration reduction device for small ships.

Korean Patent Publication No. 10-2010-0082565 Korean Patent Publication No. 10-2011-0101870

In order to solve the above-described problem, the present invention is to develop a vibration reduction device applied to a small ship, and it can be installed on a small ship at a low cost to obtain a vibration reduction effect, and secure passenger comfort and comfort. In order to reduce side effects such as motion sickness, etc., to develop and commercialize the fishery and marine leisure markets, increase sales and advance into overseas markets. It has its purpose in providing.

In addition, the present invention is relatively small in size than the conventional vibration reduction device, increases price competitiveness, and is equipped with a system for reducing the lateral movement of a small ship, and the system for reducing the lateral movement, which is very excellent in the use of space and movement of passengers inside the ship. Its purpose is to provide small ships.

In addition, the present invention consists of two rotating disk-shaped movable masses, and the two movable masses rotate at high speed in opposite directions to generate centrifugal force to improve the ship's roll effect, thereby greatly improving the feeling of boarding a small ship. It is an object of the present invention to provide a system for reducing lateral movement of the vehicle, and a small ship having the system for reducing lateral movement.

In order to achieve the above object, the system for reducing lateral movement of a small ship of the present invention comprises: a lateral sway reduction device installed on a ship and having a rotating disk-shaped movable mass for reducing the lateral movement of the ship; A position detection sensor for detecting the position of the movable mass; A horizontal swing detection sensor that detects the horizontal swing of the hull; And a control unit for controlling the driving of the lateral sway reduction device based on the position signal and the lateral sway signal detected by the position detection sensor and the lateral sway detection sensor.

The lateral shake reduction device includes a base plate; A pair of shaft support brackets installed on the upper surface of the base plate at regular intervals along the longitudinal direction of the hull; A shaft rotatably installed on the support bracket; A mounting bracket installed on the shaft; A movable mass that is rotatably installed on the mounting bracket, rotates to generate a centrifugal force, and is installed to be reciprocally moved in both transverse directions of the hull; A movable mass rotation motor installed on the mounting bracket to rotate the movable mass; And a movable mass transverse reciprocating movement unit for reciprocating the movable mass in both transverse directions of the hull.

The movable mass transverse reciprocating movement unit includes a pinion gear coupled to the shaft; A worm gear meshed with the pinion gear to transmit power; A pulley formed under the worm gear and rotatably installed on the base plate; A drive motor that generates power for rotating the worm gear; And a belt connecting the drive motor and the pulley to transmit the power of the drive motor to the worm gear.

The driving motor is supported by a mounting bracket, a slot for positioning is formed in the mounting bracket, and a bolt is fastened to the slot.

On the other hand, the present invention is a method for reducing the lateral sway of a ship for reducing the lateral sway of the hull, comprising: a first step of the lateral sway detection sensor detecting the lateral sway of the hull; A second step of detecting, by the position detection sensor, the position of the movable mass of the lateral shake reduction device; And a third step of controlling, by a control unit, the driving of the lateral sway reduction device based on the position signal and the lateral sway signal sensed by the position detection sensor and the lateral sway detection sensor.

In the third step, generating a centrifugal force by driving the movable mass rotary motor to rotate the movable mass in the form of a rotating disk; Driving the drive motor to rotate the worm gear; Rotating a pinion gear engaged with the worm gear; Rotating the shaft by the pinion gear; And rotating the movable mass in the width direction of the hull by rotation of the shaft.

As described above, the present invention is relatively smaller in size than the conventional vibration reduction device and has high price competitiveness, and is very excellent in utilization of the movement and space of passengers inside the ship.

In addition, the present invention is composed of two rotating disk-shaped movable masses, and the two movable masses rotate in opposite directions at high speed to generate centrifugal force to improve the roll effect of the ship, thereby greatly improving the feeling of boarding. In addition, it is possible to solve the previous problems that cause unpleasant feelings and accumulated fatigue to the crew and cause dangerous situations such as overturning of loaded cargo. In particular, when the wave fluctuations due to deteriorating weather conditions increase, large accidents, such as overturning of the ship or damage to the hull caused by collisions between moored ships, can be prevented in advance by the corresponding lateral fluctuation.

1 is a perspective view showing the position of the device for reducing sideways in a small ship of the present invention
2 is a block diagram showing a system for reducing sideways shaking of a small ship according to a first embodiment of the present invention
3 is a perspective view showing the location of the lateral shake reduction device according to the first embodiment of the present invention
4 and 5 are views for moving the movable mass of the lateral shake reduction device according to the first embodiment of the present invention in the transverse direction of the hull
6 is a side configuration diagram showing a system for reducing sideways shaking of a small ship according to a second embodiment of the present invention
7 is a flow chart illustrating a method for reducing sideways shaking of a ship of the present invention

Hereinafter, with reference to the accompanying drawings will be described in detail with respect to a small ship having a lateral shake reduction system and the lateral shake reduction system of the present invention.

FIG. 2 is a configuration showing a system for reducing lateral shaking of a small ship according to a first embodiment of the present invention, and FIG. 3 is a perspective view showing the location of the apparatus for reducing lateral movement according to the first embodiment of the present invention, and FIG. 4 and 5 are views for moving the movable mass of the lateral shake reduction device according to the first embodiment of the present invention in the transverse direction of the hull.

Referring to the above drawing, the lateral sway reduction system of a small ship according to the present invention is installed on the ship and provided with a rotating disk-shaped movable mass 150 for reducing lateral sway of the hull. ; A position detection sensor 200 for detecting the position of the movable mass 150; A horizontal swing detection sensor 300 that detects a horizontal swing of the hull; And a control unit 400 for controlling the driving of the lateral sway reduction device 100 based on the position signal and the lateral sway signal detected by the position detection sensor 200 and the lateral sway detection sensor 300.

The lateral shake reduction device 100 includes a base plate 110; A pair of shaft support brackets 120 installed at regular intervals along the longitudinal direction of the hull on the upper surface of the base plate 110; A shaft 130 rotatably installed on the support bracket 120; A mounting bracket 140 installed on the shaft 130; A movable mass 150 that is rotatably installed on the mounting bracket 140, rotates to generate a centrifugal force, and is installed to be reciprocated in both transverse directions of the hull; A movable mass rotation motor 160 installed on the mounting bracket 140 to rotate the movable mass 150; And a movable mass transverse reciprocating unit 170 for reciprocating the movable mass 150 in both transverse directions of the hull.

Looking at the configuration of the present invention in more detail, the lateral shake reduction device 100 includes a base plate 110 composed of a plate-like body, and a housing (not shown) covering the base plate 110. Here, the housing means a cover, and since it is a common configuration, it is omitted in the drawings. The base plate 110 is provided with a knurled portion, so that the shaft support bracket 120 and the mounting bracket 176 to be described later do not randomly flow or shake, and are firmly fixed.

The packaged lateral shake reduction device 100 in this way does not take up a lot of space on the ship, so it is possible to increase the space utilization within the ship, it is easy to install and maintain, and does not interfere with the movement of passengers, It can promote the safety of passengers and should be installed so as not to interfere with the movement of passengers. To this end, as shown in FIG. 1, the device 100 for reducing lateral shake may be installed in the hull near the steering seat.

The present invention includes two rotating disk-shaped movable masses 150, and the two movable masses 150 are configured to rotate in opposite directions to each other. In addition, a pair of shaft support brackets 120 are also disposed at two locations, respectively.

A pair of shaft support brackets 120 are installed on the upper surface of the base plate 110 to support the shaft 130. The shaft 130 is installed long along the longitudinal direction of the hull, and is rotatably installed on the support bracket 120. The shaft bearing 121 of the support bracket 120 serves to support the rotation of the shaft 130.

The shaft 130 is provided with a mounting bracket 140 for installation of the movable mass rotation motor 160, and is configured to rotate at the same angle with the shaft 130 when the shaft 130 rotates.

The movable mass 150 is rotatably installed on the rotating shaft of the movable mass rotary motor 160, rotates to generate centrifugal force, and is installed to be reciprocally moved in both transverse directions of the hull. As described above, the movable mass 150 is composed of two, and the two movable masses 150 are configured to rotate in opposite directions to each other. The movable mass 150 may include a lower movable mass 152 and an upper movable mass 151, and the upper movable mass 151 may be coupled to an upper center of the lower movable mass 152.

In addition, the movable mass transverse reciprocating unit 170 serves to reciprocate the movable mass 150 in both transverse directions of the hull, and hereinafter, the configuration of the movable mass transverse reciprocating unit 170 is in detail. Explain.

The movable mass transverse reciprocating movement unit 170 includes a pinion gear 171 coupled to the shaft 130; A worm gear 172 meshed with the pinion gear 171 to transmit power; A driven pulley 173 formed under the worm gear 172 and rotatably installed on the base plate 110; A drive motor 174 that generates power for rotating the worm gear 172; And a belt 175 connecting the driving motor 174 and the driven pulley 173 to transmit the power of the driving motor 174 to the worm gear 172.

It is preferable that a balance weight 171a is installed on the pinion gear 171 to make the rotation speed uniform.

The driving motor 174 is supported by a mounting bracket 176, a slot S for positioning is formed in the mounting bracket 176, and a bolt B may be fastened to the slot S.

The belt 175 is configured to be in contact with and guided by the tension roller T to maintain a constant tension at all times.

Meanwhile, FIG. 6 is a perspective view showing an apparatus for reducing lateral shake according to another embodiment of the present invention.

In the drawing, the same reference numerals are assigned to the same configurations as those of the first embodiment of the present invention, and reference is made to FIG. 3.

Referring to Figure 6, the lateral shake reduction apparatus 200 according to the second embodiment of the present invention, the base plate 110; A pair of shaft support brackets 120 installed at regular intervals along the longitudinal direction of the hull on the upper surface of the base plate 110; A moving shaft 230 that is rotatably installed on the support bracket 120 and is movable in the longitudinal direction of the hull; A mounting bracket 140 installed on the shaft 230; A movable mass 150 that is rotatably installed on the mounting bracket 140, rotates to generate a centrifugal force, and is installed to be reciprocated in both transverse directions of the hull; A movable mass rotation motor 160 installed on the mounting bracket 140 to rotate the movable mass 150; A movable mass transverse reciprocating unit 170 for reciprocating the movable mass 150 in both transverse directions of the hull; An actuator 280 for moving the moving shaft 230 in the longitudinal direction of the hull; And a soft coupling 290 connecting the moving shaft 230 and the actuator 280.

The difference from the configuration of the first embodiment of the present invention is that the moving shaft 230 is installed to be movable in the longitudinal direction of the hull, and the coupling 290 connects the moving shaft 230 and the actuator 280, and moves. The shaft 230 is to be movable in the longitudinal direction of the hull. The actuator 280 is driven to move the moving shaft 130 in the longitudinal direction of the hull.

The movable mass transverse reciprocating movement unit 170 includes a pinion gear 171 coupled to the shaft 130 and a worm gear 172 meshing with the pinion gear 171 to transmit power.

The soft coupling 290 is a material such as flexible soft rubber, and is configured to connect the moving shaft 230 and the actuator 280 and to be twistable when the moving shaft 230 is rotated.

On the other hand, Figure 7 is a flow chart for explaining a method for reducing the sideways shaking of a ship of the present invention.

Referring to FIG. 7, the present invention provides a method for reducing lateral sway of a ship for reducing lateral sway of the hull, comprising: a first step (S110) in which the lateral sway detection sensor 300 detects the lateral sway of the hull; A second step (S120) in which the position detection sensor 200 detects the position of the movable mass 150 of the lateral shake reduction device 100; And a third step in which the control unit 400 controls the driving of the lateral sway reduction device 100 based on the position signal and the lateral sway signal detected by the position detection sensor 200 and the lateral sway detection sensor 300 (S130). ).

In the third step (S130), generating a centrifugal force by driving the movable mass rotary motor 160 to rotate the rotary disk-shaped movable mass 150; Driving the drive motor 174 to rotate the worm gear 172; Rotating the pinion gear 171 engaged with the worm gear 172; The pinion gear 171 rotating the shaft 130; And rotating the movable mass 150 in the width direction of the hull by rotation of the shaft 130.

As described above, the present invention is relatively smaller in size than the conventional vibration reduction device and has high price competitiveness, and is very excellent in utilization of the movement and space of passengers inside the ship.

In addition, the present invention is composed of two rotating disk-shaped movable masses, and the two movable masses rotate in opposite directions at high speed to generate centrifugal force to improve the roll effect of the ship, thereby greatly improving the feeling of boarding. In addition, it is possible to solve the previous problems that cause unpleasant feelings and accumulated fatigue to the crew and cause dangerous situations such as overturning of loaded cargo. In particular, when the wave fluctuations due to deteriorating weather conditions increase, large accidents, such as overturning of the ship or damage to the hull caused by collisions between moored ships, can be prevented in advance by the corresponding lateral fluctuation.

The terms or words used in the specification and claims described above should not be construed as being limited to a conventional or dictionary meaning, and the inventor is appropriate as a concept of terms in order to describe his own invention in the best way. It should be interpreted as a meaning and concept consistent with the technical idea of the present invention on the basis of the principle that it can be defined. Therefore, the embodiments described in the present specification and the configurations shown in the drawings are only the most preferred embodiments of the present invention, and do not represent all the technical ideas of the present invention, and thus various alternatives that can be substituted for them at the time of application It should be understood that there may be equivalents and variations.

100: side sway reduction device
110: base plate
111: knurling
120: a pair of shaft support brackets
121: axial bearing
130: shaft
140: mounting bracket
150: movable mass of rotating disk
151: upper movable mass
152: lower movable mass
160: movable mass rotary motor
170: movable mass transverse reciprocating moving unit
171: pinion gear
172: worm gear
173: driven pulley
174: drive motor
175: belt
176: mounting bracket
200: position detection sensor
230: moving shaft
280: actuator
290: coupling
300: lateral movement detection sensor
400: control unit
T: tension roller

Claims (7)

It is installed on the ship, the lateral sway reduction device 100 having a rotating disk-shaped movable mass for reducing the lateral sway of the ship; A position detection sensor 200 for detecting the position of the movable mass; A horizontal swing detection sensor 300 that detects a horizontal swing of the hull; And a control unit 400 for controlling the driving of the lateral sway reduction device 100 based on a position signal and a lateral sway signal detected by the position detection sensor 200 and the lateral sway detection sensor 300. And
The lateral shaking reduction device 100,
Base plate 110; A pair of shaft support brackets 120 installed at regular intervals along the longitudinal direction of the hull on the upper surface of the base plate 110; A shaft 130 rotatably installed on the support bracket 120; A mounting bracket 140 installed on the shaft 130; A movable mass 150 which is rotatably installed on the mounting bracket 140, rotates to generate centrifugal force, and is installed to be reciprocally moved in both transverse directions of the hull; A movable mass rotation motor 160 installed on the mounting bracket 140 to rotate the movable mass 150; And a movable mass transverse reciprocating movement unit 170 for reciprocating the movable mass 150 in both transverse directions of the hull,
The movable mass transverse reciprocating movement unit 170,
A pinion gear 171 coupled to the shaft 130; A worm gear 172 meshed with the pinion gear 171 to transmit power; A driven pulley 173 formed under the worm gear and rotatably installed on the base plate; A drive motor 174 that generates power for rotating the worm gear 172; And a belt 175 connecting the driving motor 174 and the driven pulley 173 to transmit the power of the driving motor 174 to the worm gear 172, and
The driving motor 174 is supported by a mounting bracket 176, the mounting bracket 176 has a position adjustment slot (S) formed, and a bolt (B) is fastened to the slot (S),
The base plate 110 is composed of a plate-like body, and a knurling 111 is formed on the base plate 110, so that the shaft support bracket 120 and the mounting bracket 176 randomly flow or It is fixed so that it does not shake,
The movable mass 150 is composed of two, and the two movable masses 150 are configured to rotate in opposite directions, and the movable mass 150 includes a lower movable mass 152 and an upper movable mass ( 151, but the upper movable mass 151 is coupled to the upper center of the lower movable mass 152,
The shaft bearing 121 of the support bracket 120 supports the rotation of the shaft 130,
The shaft 130 is provided with a mounting bracket 140 to install the movable mass rotary motor 160, and is configured to rotate at the same angle with the shaft 130 when the shaft 130 rotates,
The movable mass 150 is rotatably installed on a rotation shaft of the movable mass rotary motor 160,
The pinion gear 171 is provided with a balance weight 171a to make the rotational speed uniform,
It is installed near the steering seat in the hull, so it does not take up a lot of space on the ship, so it can increase the space utilization in the ship, it is easy to install and maintain, it does not interfere with the movement of passengers, and protects the safety of passengers. It is possible to plan and, characterized in that it does not interfere with the movement of passengers, a system for reducing sideways movement of small ships. A small ship equipped with the lateral shake reduction system of claim 1.
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